LacZ marked 4th chromosome

I am interested in a gene on the 4th chromosome. If you have, or know
anybody who has a lacZ marked 4th chomosome, please let me know.
I am also interested to know if you have any other embryonic, larval
or pupal dominant marker on the 4th.
Thanks in advance
Jesper Kronhamn
jerkrn96 at student.umu.se